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. 2022 Apr 22;12:6614. doi: 10.1038/s41598-022-10546-9

Figure 4.

Figure 4

Date fruit melanin particle characteristics, (a) Scanning electron microscopic (SEM) Images of melanin particles at different magnification, (b) Sorption isotherm, (c) Relative Barret-Joyner Halender (BJH) pore size calculated from the sorption isotherm, (d) X-ray diffraction (XRD) profile showing the amorphous nature of the melanin. The crystalline components are artifacts from the sample preparation.